How to add the color of gray image to point cloud

Support
1

When I use the settablevalue function in vtklookuptable, I can only set the value of RGBA, but my image is a gray image. How can I set the color to the point cloud?

2

Hi, Ethan,

Set the same gray level value for R, G and B.

cheers,

Paulo

4

thanks you very much；
The same color needs to be reversed
However, I have another problem. After I click the button to display the point cloud, and then click the button to display the point cloud repeatedly, the memory will keep rising. I don’t know how to clear the previous display. Please give me your proposal

5

Hi, Ethan,

Forgive me, but I didn’t understand it. If you set R, G and B to the same value you get a gray color (or black or white).

You have to remove the autor that is already in the scene: renderer->RemoveActor(actor);. You’re likely creating multiple actors representing the same point cloud.

cheers,

Paulo